Pump valve



A. ENGLAND.

v PUMP vALvE.

APPLlCATION FILED APR.5, i920. 1,417,235. 'Patented May 23, 1922.

lNvENToR ALEXANDER ENGLAND ATTORNEY ALEXANDER ENG-LAND, OF WILKINSBRG,PENNSYLVANIA, ASSIGNOR T0 THE WEST- INGI-IOUSE AIR BRAKE CCMPANY, 0F'WLMER-DING, PENNSYLVANIA, A CORPORA- TION OF PENNSYLVANIA.

Specification of Letters `Patent.

PUMP VALVE.

lmatented llliay 23, 1922.,

Application iiled April 5, 1920. Serial No. 371,252.

T 0 all whom t may concern:

Be it known that I, ALEXANDER Enc-LAND, a citizen of the United States,residing at 1Wilkinsburg, in the county of Allegheny and State ofPennsylvania, have invented new and useful Improvements in Pump Valves,of which the following is a specification.

This invention relates to valves, and more particularly to the inlet anddischarge valves as usually employed in pumps.

In order to yieldingly maintain the valves seated, it is customary toprovide coil springs which act on the valves.

In assembling the valves with theirV corresponding springs in the pumpstructure, due to lateral or vertical movement, the springs areoccasionally displaced from their proper position, causing improperaction olA the valves.

The principal object of my invention is to provide means on the valvefor holding the seating spring in its proper position, so that inassembling, the spring will not be displaced.

In the accompanying drawing; Fig. l is an elevation, partly in section,of an inlet or discharge valve, with my invention applied thereto; andFig. 2 a plan view thereof.

In the drawing, the reference numeral l indicates an ordinary inlet ordischarge valve, and according to my invention, the spring side of thevalve is counterbored to form an annular conical recess 2 and alternatequarter sections of the flange 3, constituting the wall of the recess,are cut away to about one half the depth of the recess.

The outer diameter of the seating spring l is such that a coil of thespring will lit snugly within the bottom of the recess 2 and preferablysuch that the coil must be diametrically compressed in order to assemblethe spring.

In. assembling, the end of the spring is applied to the valve where theflange 3 is cut away and the spring is then rotated'with respect to thevalve, so that the end coil of the spring is screwed into the recess.This operation necessitates a slight diametrical compression of thespring, so that when assembled the end coil lits snugly within therecess 3.

By means of the above described construction, the spring will be held inits proper position on the valve, thus preventing displacement wlien thevalve and spring are assembled in position in the pump structure.

lilith this arrangement, broken or defective springs may be quickly andeasily replaced. as will be evident.

Having now described my invention, what I claim as new and desire tosecure by Iletters Patent, is:

l. 'Ihe combination with a coil spring, of a valve havingan annularconical recess with a portion of the wall of the recess cut away topermit the end coil of the spring to be screwed into the recess.

2. The combination with a coil spring, of valve having an annularconical recess with a portion of the wall of the recess cut away topermit the end coil of the spring to be screwed into the recess, thecuter diam` eter of the spring being greater than the shorter diameterof the recess.

In testimony whereof I have hereunto set my hand.

ALEXANDER. ENGLAND.

